Dell PowerConnect J-EX4500, Hardware Manual

Page: 106 / 226

while the switch is running without turning off power to the switch or disrupting switching
functions.
The fan tray installs horizontally on the rear of the chassis. Handles on each side of the
front faceplate facilitate handling of the fan tray.
Before you begin to install a fan tray:
•
Ensure you understand how to prevent ESD damage. See “Prevention of Electrostatic
Discharge Damage on J-EX Series Switches” on page 186.
Ensure that you have the following parts and tools available to install a fan tray in the
switch:
• Electrostatic discharge (ESD) grounding strap
CAUTION: The fan tray can be removed and replaced while the switch is
operating. However, the fan tray must be replaced within 30 seconds of
removing the fan tray to prevent the chassis from overheating.
To install a fan tray in a J-EX4500 switch (see Figure 35 on page 91):
1.
Ensure that you have the correct fan tray. The label and arrows on the fan tray must
match the label and arrows on the power supply. See “Cooling System and Airflow
in a J-EX4500 Switch” on page 24.
CAUTION: Operating the switch with an incorrect fan tray might cause
the chassis to overheat.
2.
Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and
connect the strap to the ESD point on the chassis.
3.
Hold the handles of the fan tray and align the tray with the fan tray guides on the fan
tray slot.
NOTE: Ensure that the power supply labels,
1
and
0
, are on the left side
corners of the fan tray.
4.
Slide in the fan tray until it is fully seated in the chassis.
90
Dell PowerConnect J-Series J-EX4500 Ethernet Switch Hardware Guide